oled exp pinout

[Faustas Puzeras]

I would really want to find a public oled exp pinout cuz I don't want to damage my wires

[György Farkas]

@Faustas-Puzeras Expansion Header to OLED Expansion pinout

Expansion Header
     +-----+ 
 GND | 1  2|
3.3V | 3  4|
     | 5  6|
     | 7  8|
     | 9 10|
     |11 12|
     |13 14|
     |15 16|
     |17 18|
     |19 20|
     |21 22| SCL  GPIO4 Omega2(+)
     |23 24| SDA  GPIO5 Omega2(+)
     |25 26| GND
     |27 28|
 GND |29 30| 3.3V
     +-----+ 

I do not have genuine Onion OLED Expansion but it is not too complicated.

[Maximilian Gerhardt]

I don't know if that's the schematic of the recent OLED (or were there some for the Omega 1?), but here it is: https://github.com/OnionIoT/Onion-Hardware/blob/master/Schematics/Omega-OLED-Expansion.pdf. There are also mechanical drawings (https://github.com/OnionIoT/technical-drawings/blob/master/Mechanical/OM-E-OLE.PDF).

That PDF also shows SCL and SDA as the only connections going to the Omega (and GND, 3.3V from it) to the aforementioned pins (GPIO4/5), which is also what I would expect from a simple I²C OLED.